NF EN ISO 13165-3
NF EN ISO 13165-3

NF EN ISO 13165-3

December 2024
Standard Current

Water quality - Radium-226 - Part 3 : test method using coprecipitation and gamma-ray spectrometry

This document specifies a method to determine radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-ray spectrometry (see ISO 20042[7]).The method covers the measurement of soluble 226Ra activity concentrations greater than 0,002 Bq·l−1 using a sample volume of up to 100 l of any water type.For water samples with a volume of less than a volume of 1 l, direct gamma-ray spectrometry can be performed following ISO 10703 but with a higher detection limit. The typical detection limit for samples of 1 l to 5 l is in the range of 0,002 to 0,000 40 Bq·l−1[8].NOTE            This test method can be adapted to determine other naturally occurring isotopes of radium, such as 223Ra, 224Ra and 228Ra, if the respective ingrowth periods are taken into account.

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Main informations

Collections

National standards and national normative documents

Publication date

December 2024

Number of pages

28 p.

Reference

NF EN ISO 13165-3

ICS Codes

13.060.60   Examination of physical properties of water
17.240   Radiation measurements

Classification index

M60-811-3

Print number

1

International kinship

ISO 13165-3:2024

European kinship

EN ISO 13165-3:2024
Sumary
Water quality - Radium-226 - Part 3 : test method using coprecipitation and gamma-ray spectrometry

This document specifies a method to determine radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-ray spectrometry (see ISO 20042[7]).

The method covers the measurement of soluble 226Ra activity concentrations greater than 0,002 Bq·l−1 using a sample volume of up to 100 l of any water type.

For water samples with a volume of less than a volume of 1 l, direct gamma-ray spectrometry can be performed following ISO 10703 but with a higher detection limit. The typical detection limit for samples of 1 l to 5 l is in the range of 0,002 to 0,000 40 Bq·l−1[8].

NOTE            This test method can be adapted to determine other naturally occurring isotopes of radium, such as 223Ra, 224Ra and 228Ra, if the respective ingrowth periods are taken into account.

Replaced standards (1)
NF EN ISO 13165-3
NF EN ISO 13165-3
February 2020
Standard Cancelled
Water quality - Radium-226 - Part 3 : test method using coprecipitation and gamma-spectrometry

ISO 13165-3:2016 specifies the determination of radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-spectrometry (see ISO 18589‑3). The method described is suitable for determination of soluble 226Ra activity concentrations greater than 0,02 Bq l−1 using a sample volume of 1 l to 100 l of any water type. For water samples smaller than a volume of 1 l, direct gamma-spectrometry can be performed following ISO 10703 with a higher detection limit. NOTE This test method also allows other isotopes of radium, 223Ra, 224Ra, and 228Ra, to be determined.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Symboles
  • 5 Principe
  • 6 Réactifs et équipement
  • 7 Échantillonnage
  • 8 Modes opératoires
  • 9 Programme d'assurance qualité et de contrôle de la qualité
  • 10 Expression des résultats
  • 11 Rapport d'essai
  • A Chaîne de désintégration de l'uranium
    238
  • Bibliographie
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